For me, collecting was linked to my high school years. When I hit college, other things became more important (women, music, etc), and I just did not have time, money and interest to collect games. After a year or so of lack of interest, I decided to start selling the things that I owned for "collectors " purposes only. Keep the games that you had as a child, keep the games that you enjoyed playing. Sell the games that you had bought just for "collectors sake" only...for these you will not miss. The others you would regret selling.